Code coverage is not compatible with PHPUnit 9.x #455
Description
Running code coverage with latest V9 phpunit-selenium and any 9.x version of PHPunit results in
PHP Fatal error:
Uncaught TypeError: Argument 1 passed to SebastianBergmann\CodeCoverage\CodeCoverage::append() must be an instance of SebastianBergmann\CodeCoverage\RawCodeCoverageData, array given, called in /vendor/phpunit/phpunit-selenium/PHPUnit/Extensions/Selenium2TestCase.php on line 368 and defined in vendor/phpunit/php-code-coverage/src/CodeCoverage.php:239